swift234

Omit needless words: remove plural forms of element names when the type is a collection.

When the type name we're looking at is a collection of some element
type, also try to match the plural form of the element type name. For
example:

-  func deselectItemsAtIndexPaths(_: Set<NSIndexPath>)
+  func deselectItemsAt(_: Set<NSIndexPath>)

Swift SVN r31666